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1000 tulosta hakusanalla "Polymers"

Polymers for Packaging and Containers in Food Industry

Polymers for Packaging and Containers in Food Industry

Sukhareva

VSP International Science Publishers
2008
sidottu
This book delineates the scientific principles of design and fabrication of packaging materials for food as well as methods for structural modification and other techniques. It describes the main practical properties and applications of polymer materials and highlights the analysis of all processes taking place during formations and destruction of polymer packaging materials. Methods such as electron microscopy, infrared microscopy and optical polarization were used to describe the behaviour of polymer materials and their composition.
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Polymers Derived from Isobutylene. Synthesis, Properties, Application

Polymers Derived from Isobutylene. Synthesis, Properties, Application

Sangalov

VSP International Science Publishers
2001
sidottu
This monograph aims to give an overview of recent chemical and technological developments in the area of polymers and co-polymers derived from isobutylene, which have a wide range of (industrial) applications.The scientific basis for presenting the material aEURO" application of the acid-base theory with a view to the fundamental steps of isobutylene polymerization aEURO" is combined with the application of quantum-chemical calculations of catalysts, linked active centers, separate elementary stages of the process, and critical analysis of some experimental data. In addition, a number of problems, such as the macrokinetic description of isobutylene polymerization, description of the balanced scheme of industrial production of isobutylene polymers, and initiation of isobutylene polymerization with the help of immobilized cationic catalysts are discussed. Special attention is given to ecological aspects of synthesis and application of isobutylene polymers.This book will be of value and interest to researchers in the areas of chemistry and physics of high-molecular compounds, as well as engineers and technologists specialized in the area of olefins and polyolefins.
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Polymers and Polymeric Materials for Fiber and Gradient Optics

Polymers and Polymeric Materials for Fiber and Gradient Optics

Lekishvili

VSP International Science Publishers
2002
sidottu
This book considers general aspects of the theory of polymers applied in optics. The main factors affecting the light loss in polymeric wave beam guides (PG) are discussed, and the mechanism of light loss in PG is analysed. Polymers applied in fiber optics are classified with reference to methods of fabrication and purification of the materials. Technological aspects of material fabrication are considered together with kinetic aspects of polymerisation. Updated information on polymerisation kinetics of MMA and styrene, and copolymerisation of these monomers with each other is reported. Other topics discussed in the book are heterogeneity of optic copolymers, association between structure and reactivity of monomers, other properties of optic copolymers, and areas of their commercial application.This volume will be of value and interest to anyone working in the field of optic polymers, both in academia and industry.
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Polymers at Interfaces

Polymers at Interfaces

G.J. Fleer; M.A. Cohen Stuart; J.M.H.M. Scheutjens; T. Cosgrove; B. Vincent

Springer
2013
nidottu
This book is concerned with the configuration of polymers at the interfacial zone between two other phases or immiscible components. In recent years, developments in technology combined with increased attention from specialists in a wide range of fields have resulted in a considerable increase in our understanding of the behavior of polymers at interfaces. Inevitably these advances have generated a wealth of literature and although there have been numerous reviews, a critical treatment with adequate descriptions of both theory and experiment, including detailed analysis of the two, has been missing. This text hopes to fill this gap, providing a timely and comprehensive account of the field as it stands today. This long needed work will be invaluable to experts as well as newcomers in the broad field of polymers, interfaces and colloids, both in industry and academia. Whilst industrial laboratories involved in this field will find it indispensable, it will be equally important to anyone with an interest in interfacial polymer or colloidal research.
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Polymers At Nanoscale (In 2 Volumes)

Polymers At Nanoscale (In 2 Volumes)

WORLD SCIENTIFIC PUBLISHING CO PTE LTD
2023
sidottu
Making polymers into nanoparticles as an essential step in polymer solution processing is of key importance for many applications of polymers. This book seeks to uncover the basics and recent advances in polymer nanoparticles, including polymer synthesis, self-assembly, properties, and applications. It encompasses the various preparation methods of polymer nanoparticles, broadly ranged from single chain collapse to polymerization methods and solution self-assembly. It showcases a wide range of advanced applications of polymer nanoparticles in several fields that include pharmaceutics (drug and nucleotide delivery), biomedicals (bioimaging, diagnosis, and therapeutics), energy (batteries and solar cells) and environmental (catalysis and water purification).This book is enriched with a comprehensive range of content, incorporating synthesis, properties and applications in polymeric nanoparticles that will serve as a suitable beginner guide and survey book in polymer nanomaterials, as well as a useful tool for graduate students, scientists and practitioners in related fields or industries such as chemistry, materials science and engineering, nanomaterials, energy storage and conversion devices, and biomedicine.
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Polymers, Liquids And Colloids In Electric Fields: Interfacial Instabilites, Orientation And Phase Transitions

Polymers, Liquids And Colloids In Electric Fields: Interfacial Instabilites, Orientation And Phase Transitions

World Scientific Publishing Co Pte Ltd
2009
sidottu
This unique book aims to expose the reader to a wide range of phenomena occurring when soft matter systems are put under the influence of an external electric field. The book shows how an electric field can be used to affect objects at the submicron scale, and how it controls the phase behavior of liquids and polymers. The main focus is on the basic underlying mechanisms. Some technological applications are dealt with as well.Book chapters are arranged in a logical order, from “simple” systems to more complicated ones. In addition, each topic is covered by the mixed bag of theory, experiment and simulation; and this will give the reader a broad perspective of the underlying physical phenomena.
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Polymers and Pyridazines

Polymers and Pyridazines

Péter Tétényi

Pan Stanford Publishing Pte Ltd
2019
nidottu
In the past few years, a few articles have been published on the solid-phase synthesis of pyridazine derivatives. These methods apply to intermediates weakly bound to polymers, as a result of which the ester bond is cleaved easily, either during ring closure or right after it. There are few polymer-supported syntheses of heterocycles. This book, Polymers and Pyridazines, discusses a new strategy for polymer-supported synthesis of pyridazine derivatives with much higher reaction rates, applying higher loading and much wider reaction conditions due to the more stable attachment. On the basis of the research conducted, a fundamental break-through was achieved in solid-phase heterocyclic chemistry. The experiments are accompanied by colored drawings and 3D diagrams to help understand the importance of swelling and/or excess concentrations of reagents. Detailed experiments provide complete procedures with infrared difference spectra. The book will be a helpful reference for academy polymer specialists and postgraduate students studying polymer syntheses of general substrates.
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Polymers for Advanced Technology

Polymers for Advanced Technology

SPRINGER VERLAG, SINGAPORE
2024
sidottu
This book presents select proceedings of the International Conference on Polymers for Advanced Technology (APA 2023). Polymers offer enormous opportunities for newer applications in technologically important areas. This book includes comprehensive step-by-step chapters with details of the processing and functionalization of polymers and their applications. This book will help the readers to know the recent developments and comprehensive research on polymers for advanced technology. All chapters in this book include illustrations, tables, figures, graphs, bibliographies, and extensive references to provide comprehensive information to the readers. This book can be a valuable reference for researchers and professionals interested in polymeric materials and biomaterials.
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Polymers in Drug Delivery Systems

Polymers in Drug Delivery Systems

HAYLE MEDICAL
2025
sidottu
A polymer is a chemical compound or a compound mixture that is composed of repeating structural subunits. There are two types of polymers, namely natural polymers and synthetic polymers. Polymers are produced through the polymerization of many small molecules called monomers. Polymers are being extensively used in drug formulation and drug delivery devices due to their surface and bulk properties. The unique physical properties of polymers include toughness, high elasticity, viscoelasticity, and a tendency to form amorphous and semicrystalline structures rather than crystals. Polymers provide controlled release of therapeutic agents or active pharmaceutical ingredients over long periods, cyclic dosage, and tunable release of hydrophilic and hydrophobic drugs. This book explores the utility of polymers in developing effective drug delivery systems. A number of latest researches have been included to keep the readers updated with the latest developments in this area of study. It will serve as a valuable source of reference for scientists and other professionals working on polymers for drug delivery systems.
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Polymers, Colloids, and Surface Chemistry

Polymers, Colloids, and Surface Chemistry

De Gruyter
2026
isokokoinen pokkari
Polymers, colloids, and surface chemistry are interconnected areas that play significant roles in the development and functionality of various products and technologies. The book helps to address issues related to material performance, stability and interactions. It begins with an introduction to polymers, covering their history, classification, nomenclature, molecular weight, and industrial significance. The chemistry of polymerization is then discussed in detail, including the mechanisms and kinetics of free radical, cationic, anionic, step-growth, and coordination polymerization, along with industrial techniques. The book also delves into polymer solutions, emphasizing thermodynamics, solubility, phase behavior, and applications in industries such as plastics, coatings, and biomedical fields. Moving to colloid chemistry, it explores colloidal systems, their comparison with true solutions and suspensions, types, preparation methods, and industrial relevance. The properties of colloids, including optical, kinetic, and electrical properties such as the Tyndall effect, Brownian motion, and electrophoresis, are discussed alongside suspensions, emulsions, and their practical applications. The surface chemistry of colloids is examined through interfacial phenomena, surface potential, Langmuir-Blodgett films, electrical aspects, and colloidal stability. Furthermore, the applications of colloids in petroleum, pharmaceuticals, cosmetics, water purification, and environmental science are highlighted, demonstrating their interdisciplinary significance. The book concludes with an in-depth study of surface chemistry, focusing on adsorption phenomena, types of adsorption, adsorption isotherms, and industrial applications in catalysis, chromatography, pollution control, and biological systems. With a structured approach, real-world examples, and a focus on industrial and scientific relevance, this book serves as a valuable resource for students aiming to master the fundamental and applied aspects of polymers, colloids, and surface chemistry.
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